---
Title: '【Rails5】Deviseを使って会員登録を行い、郵便番号から住所を自動入力にする方法　#rails #郵便番号'
Keywords:
  - rails
  - 郵便番号
Author: michiru
Web: https://mimemo.io/m/5dn7jlK2BXor9Ye
---

![s_2019-11-04 (2)](https://mimemo.s3-ap-northeast-1.amazonaws.com/attachment/8ec4eb51-8137-493f-ba71-73808a7f7c6d.png)

### 1. rails new myappをターミナルで実行 
```
$ rails new myapp 　#myappのところには自由に名前を入れる
```
### 2. gemに下記を追加し bundle install 

```:Gemfile=7
 ​gem 'sqlite3', '~> 1.3.13' 　#sqlite3には ~> 1.3.13を足す

 gem 'devise'       
 gem 'jp_prefecture' 
 gem 'jquery-rails' #rails5はこれを入れないとjQueryが動かない
```
```
 $ bundle install
```
### 3. Deviseを導入（ターミナルで実行）
```
 $ rails g devise:install
 $ rails g devise User 
 $ rails g devise:controllers users 
 $ rails g devise:views 
```
### 4. routes.rb（ルーティング設定） 
```:routes.rb=1
Rails.application.routes.draw do

 devise_for :users, :controllers => {
   :registrations => 'users/registrations', 
   :sessions => 'users/sessions' 
 } 
end
```
5. ホーム画面を作っておく。
```
 $ rails g controller welcome index
```

```:routes.rb=1
Rails.application.routes.draw do
 root 'welocome#index' #追加
 devise_for :users, :controllers => {
   :registrations => 'users/registrations', 
   :sessions => 'users/sessions' 
 } 
end
```

### 5. userテーブルに郵便番号用下記カラム追加 (ターミナルで実行）
```
 $ rails g migration addColumnToUsers 
```
### 6. migrationファイルに下記を追加 
```:20191104093319_add_column_to_users.rb=1
class AddColumnsToUsers < ActiveRecord::Migration[5.1] 
   def change       
       add_column :users, :postcode, :integer
       add_column :users, :prefecture_code, :integer
       add_column :users, :address_city, :string
       add_column :users, :address_street, :string
       add_column :users, :address_building, :string
   end
end 
```
　
```
 $ rails db:migrate
```
### 7. models/user.rb に下記を追加
```:models/user.rb=7
 #2019.11.15 以下をコメントアウトにするとprefecture_nameでカラムにデータが入った
 #include JpPrefecture
 #jp_prefecture :prefecture_code


 def prefecture_name
     JpPrefecture::Prefecture.find(code: prefecture_code).try(:name)
 end   
  
 def prefecture_name=(prefecture_name)
     self.prefecture_code = JpPrefecture::Prefecture.find(name: prefecture_name).code
 end 
```
### 8. assets/javascripts/welcome.coffeeに下記を追加 
```:assets/javascripts/welcome.coffee=1
 ​ $ ->
  $("#user_postcode").jpostal({
    postcode : [ "#user_postcode" ],
    address  : {
                  "#user_prefecture_code" : "%3",
                  "#user_address_city"            : "%4",
                  "#user_address_street"          : "%5%6"
		  "#user_address_building": "%7"
                }
  })    		     
```
### 9.views/devise/registrations/edit.html.erbを下記に追加 
```:views/devise/registrations/edit.html.erb=34
<div class="field">
     <%= f.label :postcode %><br />
     <%= f.text_field :postcode, autofocus: true, autocomplete: "postcode" %>   </div>     
<div class="field">
     <%= f.label :prefecture_code %><br />
     <%= f.collection_select :prefecture_code, JpPrefecture::Prefecture.all, :code, :name %>
</div>     
<div class="field">
     <%= f.label :address_city %><br />
     <%= f.text_field :address_city, autofocus: true, autocomplete: "address_city" %>   
</div>     
<div class="field">
     <%= f.label :address_street %><br />
     <%= f.text_field :address_street, autofocus: true, autocomplete: "address_street" %>   
</div>     
<div class="field">
     <%= f.label :address_building %><br />
     <%= f.text_field :address_building, autofocus: true, autocomplete: "address_building" %>   
</div> 
```
### 10.assets/javascripts/jquery.jpostal.jsを追加
```:assets/javascripts/jquery.jpostal.js
  ​git clone url  
```
url の部分に(https://github.com/ninton/jquery.jpostal.js/)を入れる。クローンしたらassets/javascripts/直下にjquery.jpostal.jsファイルのみを配置する。 
***
不明点、修正点ございましたらコメントよろしくお願いします。